Polished rod clamp



. C. E. GALLMAN POLISHED ROD CLAMP Filed May 11, 1926 Patented July 31,1928.

UNITED STATES PATENT OFFICE.

CHARLES E. GALLMAN, 0F TULSA, OKLAHOMA, ASSIGNOR TO OIL WELL SUPPLYCOM-PANY, OF PITTSBURGH, PENNSYLVANIA,

A CORPORATION OF PENNSYLVANIA.

POLISHED ROD CLAMP.

Application filed May 11,

My invention relates to improvements in polished rod clamps designed foruse in connection with pumping outfits for pumping oil wells. Clamps ofthis character are secured to the polished rod intermediate the walkingbeam and the stuffing-box usually employed in these outfits and aredesigned to engage and support the said rod when it is disconnected fromthe walking beam or at other times. I

Among the objects of my invention are; to provide a new and improvedpolished rod clamp having a plurality of polished rod receiving openingstherein; a clamp of the character described made of two halves of suchconstruction that when assembled the clamp will have two polished rodreceiving openings extending through the clamp structure at right angleswith each other; and a clamp having two polished rod receiving openingsextending therethrough, one of the openings being of greater diameterthan the other. In the accompanying drawing, which illustrates anapplication of my invention,

Figure 1, is an elevational View of the inner face of one of themembersconstituting the polished rod clamp;

Figure 2, an elevational view showing a portion of a walking beam and apart of an oil well pumping outfit with my improved polished rod clampapplied thereto; and

Figure 3, a top plan view of the clamp and showing the polished rod insection.

Referring to the drawings and as preferred, my improved polished rodclamp des ignated generally by the numeral 4, com prises two similarmembers 5 and 6; these members are preferably made from some suitablecast metal. Each member comprises a vertically extending semi-circulargrooved portion entering into the formation of an opening 7, and ahorizontally extending semi-circular grooved portion designed to form anopening 8; the grooved portions may be such as to form circular openingsthrough the clamp of equal diameters or as shown by Figure 1, openingsof unequal di ameters. In other words, when the two clamp portions 5 and6, of the form shown by the drawing, are assembled to receive thepolished rod 9, the structure will comprise two intersecting openings orbores extending through the clamp and disposed at right angles to eachother, the bore or open- 1926. Serial No. 108,281.

ing 7 being of less diameter than the bore ing 7,

The purpose of forming the openings of different diameters is to enablea single clamp structure to be employed in connection with polished rodsof different diameters.

The clamp members Sand 6, when assembled, are held in close relationshipby means of horizontally extending bolts 10 and 11 arranged in pairs,said bolts being passed through registering openings 12 formed in therespective clamp members. 13 designate adjusting nuts disposed on thethreaded ends of said bolts. It will be seen that the nuts of each pairof bolts are located on opposite sides of the clamp structure.

Clamps of this character, as above stated, are employed in pumpingoutfits for oil wells and in Figure 2, of the drawings I have showndiagrammatically a portion of a walking beam 15 to which the polishedrod is secured. In this view, 16 designates an adjuster plate, 17 anadjuster T bolt,18 an elevator sub 19 an adjuster, and 20 astuffing-box. It will be noted that the polished rod clamp is locatedbetween the walking beam and the stufling-box and that it is adapted tobe lowered into contact with the stufiingbox, in this last mentionedposition it supports the polished rod.

lVhat I claim is:

1. A polished rod clamp including two similar separable clamp membersand having two polished rod receiving openings extending centrallytherethrough, one opening beingdisposed at right angles with andbiseating the other, and means for securing the clamp members togetherincluding two pairs of horizontally extending bolts passed throughopenings in the clamp members, each bolt having an adjusting nut thereonwith the nuts of each pair located on opposite sides of the clamp. g

2. In a polished rod clamp, two similar separable clamp members eachformed with centrally disposed semicircular bisecting grooves and. aplurality of bolt receiving openings, and two pairs of horizontally ex-In testimony whereof I aiiix my signature.

CHARLES E. GALLMAN.

